Composition for removing boiler-scale.



UNITED STATES union.

BENJAMIN PENA, on LAREDO, TEXAS.

COMPOSITION FOR REMOVING BOILER SCALE.

SPECIFICATION forming part of Letters Patent No. 672,285, dated April16, 1901.

Application filed August 4, 1900. Serial No. 25,923. (No specimens.)

To all whom, it may concern:

Be it known that I, BENJAMIN PENA, a citizen of the Republic of Mexico,and a resident of Laredo, in the county of Webb and State of Texas, haveinvented a new and useful Composition for Removing Boiler-Scale, ofwhich the following is a full, clear, and exact description.

The object of my invention is to provide an extract of the plant knownto botanists by thename Larrea, Mezm'ocmo, to be used in removingboiler-scale and in preventing the reformation of the same.

The invention consists in the novel extract referred to and method ofpreparing the same, as fully described hereinafter.

My process of preparing a solution which wili effectually remove boilerincrustation consists in boiling or steaming the plant Larrea llfem'crmapreferably in sixteen times its weight in water until the weight of thewhole has been reduced one-half.

In order to remove scale of one and onehalf inches, for example, from alocomotiveboiler, eighty pounds of the solution thus prepared are addedto the water in the boiler. After eight days the loosened scale isremoved and eighty pounds of the solution are again added to the waterin the boiler. Eight days from the second application will generallysufiice for the removal of all the scale. In order to preventreincrustation, twenty-four pounds of the solution are added to thewater in the boiler at intervals of approximately fifteen days.

Although I have stated that I boil or steam Larrca. M'ewiccma preferablyin sixteen times its weight in water for the period mentioned andalthough I have given the weight of solution and process preferablyemployed in removing one and one-half inches of scale, I desire it to beunderstood that other strengths can be made and used, according to thethickness and tenacity of the scale, and that I do not limit myself tothe exact proportions mentioned, but reserve to myself the right to makethe extract from the said plant Lemma.

lllem'cana by boiling or steaming it of other strengths and in otherproportions than those above mentioned.

The solution prepared as I have indicated has merits not possessed bymost compounds for removing scale. If used as I have directed, theextract will prevent reincrustation and will not corrode or in any Wayaffect the metal which enters into the construction of the boiler.

Having thus clearly described my invention, I claim as new and desire toprocure by Letters Patent- 1. A solution for removingboiler-incrustation, consisting of an extract from the plant LarrecrIllem'cana.

2. A compound for removing boiler-incrustation, in which the activeingredient is an extract from the plant Larrea illcocicona.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

hi N BENJAMIN PENA.

mark Witnesses:

HAROLD M. FENNELL, W. A. BONNET.

